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Finding the Fourth Proportional to 714.23, 1,071.12 and 453.83

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Solution

The fourth proportional to 714.23, 1,071.12 and 453.83 is: 680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.23 : 1,071.12 = 453.83 : x
  2. Step 2: Convert to fraction form
    714.23/1,071.12 = 453.83/x
  3. Step 3: Cross multiply
    714.23x = 1,071.12 × 453.83
  4. Step 4: Simplify right side
    714.23x = 486,101.03
  5. Step 5: Solve for x
    x = 486,101.03/714.23
  6. Step 6: Final answer
    x = 680.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.